<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>float</title>
    <link rel="stylesheet" type="text/css" href="float.css"/>
</head>
<body>
    <div class="box">
    <div class="main-left"></div>
    <div>
        <div class="nav floorl1">图片</div>
        <div  class="nav floorl2">图片</div>
        <div  class="nav floorl3">图片</div>
        <div  class="nav floorl4">图片</div>
        <div  class="nav floorl5">图片</div>
        <div class="nav floorl6">图片</div>
        <div  class="nav floorl7">图片</div>
        <div  class="nav floorl8">图片</div>
    </div>

    </div>
</body>
</html>